Locomotive acetylene-gas headlight.



vv. R, THURSTUN. I LOGOMOTIVE AGETYLENBGAS HEADLIGHT.

APPLICATIDN FILED SEPT. 13, 1912.

Lwgo@ Patented Mar. 10,1914

2 SHEETS-SHBBTL Attorneys W. R. THURSTON.

LOGOMOTIVB AGBTYLBNE GAS HEADLIGHT.

APPLIOATION FILED SEPT. 13, 1912. L, Patented Mar. 10, 1914.

2 SHEETS-SHEET 2.

23 .25 Z jf Witnesses ttl bnr

STATES PANT FFTE, I

LOCOMGTIVE ACETYLENE-GAS HEADLIGHT.

reeaeea Specification of Letters Patent.

raten-ted nar. le, rela.

Applation led September 13, 19l2. Serial No. 720,207.

T0 all whom it may concern Be 1t known that l, WYILLIAM R. THURS- -ToN,a citizen of the United States, residing be employed upon locomotiveengines orv wherever a brilliant illumination is required.

The device herein disclosed employs acetylene as an illuminant, andmeans is provided for receiving and moistening the carbid.

The invention aims to provide means for heating the interior of thewater tank, to prevent freezing of the contents thereof.

Another object of the invention is to provide a movable shield fordirecting heated air from the burner into the pipe which enters thewater tank.

Another objectof the invention "s to improve generally and to increasetht utility of, devices of that type to which the present inventionappertains.

With the above 'and other objects in View, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of invention herein disclosed can be made Within the scope ofwhat is claimed without departing from the spirit of the invention.

ln the drawings, Figure l shows the invention in front elevation, partsbeing broken away; Fig. 2 is a vertical longitudinal section through thewater reservoir and attendant parts; Fig. 3 is a side elevation of thecomplete structure, parts being broken away; Fig. /l is a verticallongitudinal section of the carbid receptacle and of the Waterreservoir, together with attendant parts; llig. 5 is a transversevsection on the line 5 5 of llig. 2; Fig. G is a fragmental top plan;Fig. 7 is a side elevation of the shield, the View depicting portions ofthe mechanism whereby the shield is manipulated, parts being brokenaway; Fig. 8 is a top plan of the shield.

ln carrying out the invention there is provided a base l, fixed to andupstanding from which is a support 2, supporting a reflector 3 whichpreferably although not necessarily is rof the common parabolic type.

the base l carries a supporting structure which may take the form of aplurality of legs 4, connected with a funnel shaped gas chamber 5, themouth of which is" downwardly disposed. Threaded upon the mouth ofthechamber 5 or otherwise secured thereto is a. carbid receptacle (i.Threaded to the smaller end of the gas chamber 5 is a lower waterreceptacle 8 which is of funnel shape, the. mouth of the receptacle 8being upwardlyv disposed, the threaded connection between the chamber 5and the receptacle 8 being designated the reference character l.Threaded to the upper end of lthe lower water receptacle 8, as shown at9,v is a reser`1 voir l0, the top ll .of which is provided with n nipplel2, receiving a cap lll, into which is threaded a needle valve l5,provided at its outer end with a turning head 16; the pointed extremityof the needle valve 15 is received within a seat 17 formed at the axisof the lower water receptacle 8. Removably mounted in the lower portionof the water receptacle 8 and disposed below the seat 17 isa retainingmember 18, carrying a drip pipe 19, projecting into a distributing' tube20, the same being perforated, and beine' secured at its lower end totherbottorn of the carbid receptacle 6. Depending from the top 1l of thereservoir l0 is a foraminous strainer tube 2l. Access is had to theinterior of the strainer tube by means of a removable plug 22 which ismounted in the top l1 of the reservoir l0.

Extending from the gas chamber 5 is, a deliverypipe 23, passing throughlan opening 23a into the interior of the reflector 3, the free end ofthe pipe 23 carrying aburner 24 which may be of any desired type.

Communicating with the interior of the reflector 3 and extendedrearwardly from the reliector is a funnel 25, communicating with anupright pipe 26, the latter having a transverse extension 27 whichcommunicates with a U-shaped circulating pipe 28, the latter beingextended downwardly through the top ll of the reservoir l0 into thereservoir, the free end 29 of the cireu lating pipe 28 extendingupwardly through the top l1.

Guides 30 in the form of rods are secured. to the base 1, the guides 30passing upwaidly through the opening 23a in the relie ctor 3. Mounted bymeans of brackets 3la toslide on the guides 30 is a trough shaped shield31 shown in Figs. 1, 8 and 7, and open at the back. A shaft 32 isjournaled for rotation in bearings 32a upon the base 1, the shaft 32being provided with a forwardly extended finger 33 lying beneath thelower end of the shield 31. At one end of the shaft 32 there is anupstanding crank arm`34a ,Tyhe operation of the device above describedis as follows The carbid is placed within the receptacle 6, about theperforated tube 20, and, the plug 22 being removed,

waterjs poured into the receptacle 8-10,

,thestrainer tube21 exercising its obvious function. When the needlevalve is ro- Vtat-edn'through the medium of the head 16,v

the oint of the needle valve is retracted out of t e seat \\17, so thatwater may pass into the drip tube 19 and from the drip tube 19 into thedistributing tube 20, the water passing through the perforations of thetube 2O and acting upon the carbid which is in the receptacle 6. The gaswhich is formed with- .in/ the receptacle 6 will accumulate in thefunnel shaped gas chamber 5, and pass thence, by way of the pipe 23 tothe burner 24. To prevent an overheating of the reiector 3, the'same isprovided with ventilating apertures which may be ositioned at anydesired points in the re ector. The heated air which is located withinthe contour of the reiector 3 will pass into the funnel 25 and thence byway of the upright f pipe 26 and the extension 27, into the U- raise andto lower the shield 31 upon the guides 30.

The shield or screen 31 is a mere troughshaped element, archedtransversely away from the vertical axis of the burner 24. Then theshield or screen 31 is raised, the same moves upwardly in front of theburner 24 but does not extinguish the iame. When the flame at the burner24 is under full head and when the screen or shield 31 is depressed,suliicient heat will be generated to effect the desired result, eventhough the shield be lowered. When a light is not required, the flame atthe burner 24 may be turned down to a considerable degree, under whichcircumstances the shield 3 1 may be raised, thereby directing therelatively small amount of heat generated directly into the funnel 25.

Having thus described the invention what is claimed is 1. In a device ofthe class described, a reflector; a'burner within the contour of thereector; a carbid receptacle and a water reservoir communicating withthe carbid receptacle; means for admittin air tothe reiector; and acombined venti ating and water heating pipe opening at one end through Ythe reflector above the burner andat its other end provided with areturn bend extended into the reservoir and having an open enddischarging outside of the reservoir.

2. In a device of the class described, a reiector; a burner within thecontour of the `,reiector; a carbid receptacle and a water reservoircommunicating with the carbid receptacle; a pipe opening into thereflector above the burner and extended through the water-receptacle;and a shield movable in front of the burner, the shield constitutingmeans for directing heated air from the burner to the pipe. f

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

WILLIAM R. THITRSTON.

Witnesses:

vWM. W. MCMAHON, JAS. D. McMAHoN.

